import type { ReactNode } from 'react';
interface SourceStepLayoutProps {
    /** Enables the rail's add/remove affordances (only the first per-source step). */
    showAddSource?: boolean;
    /** The step's main content column. */
    children: ReactNode;
}
/**
 * Shared chrome for the per-source wizard steps. When the `multiSource`
 * capability is enabled, the sources rail is shown beside the main content;
 * when disabled, the rail is hidden and the content renders full-width (the
 * wizard then operates on the single default source).
 */
export declare const SourceStepLayout: ({ showAddSource, children }: SourceStepLayoutProps) => import("react/jsx-runtime").JSX.Element;
export {};